Rocky Mountain maple Aceraceae Acer glabrum Torr. Listen to the Latin symbol: ACGL Other Fact Sheets
Leaf: Opposite, simple or compound varying widely across its range; in the northern part of its range it is simple with 3-5 serrated lobes; in the southern part of its range has much deeper sinuses and occasionally is compound with three leaflets; green above with lighter veins, slightly paler below.
Flower: Species is usually monoecious; yellow-green in small clusters.
Fruit: Two-winged samaras, one inch long, hanging in clusters and dry when mature.
Twig: Slender, pale green to red. Buds are red and pointed.
Bark: Thin, tight, smooth and gray.
Form: A small tree with slender, spreading branches and generally poor form, usually low branching

Looks like: sycamore maple - vine maple - boxelder - bigleaf maple
leaf flower fruit twig bark form1 map
Additional Range Information:
Acer glabrum is native to North America.
Range may be expanded by planting.
See states reporting Rocky Mountain maple.
More: Fall Color
External Links:
USDAFS Additional Silvics
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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